Question

看起来订阅没有到达我的服务器。

我的服务器端订阅方法在订阅时打印到Tomcat控制台。我加载网页时没有看到这个日志

浏览器控制台说websocket成功打开
request.onOpen未被点击
request.onMessage没有被点击
当我在浏览器中直接访问订阅URL（没有所有查询字符串params氛围）时，我在Tomcat控制台中看到了日志。

Stack：Atmosphere 2.2.3，Atmosphere-Jersey 2.2.3，Jersey-Jason 1.6，Servlet 3，Java 7，Tomcat 7.0.56

的JavaScript

$(function () {
    "use strict";

    var content = $('#content');
    var input = $('#input');
    var status = $('#status');
    var logged = false;
    var socket = $.atmosphere;
    var request = { url: 'http://localhost:8080/atmospherePOC/rest/subscription',
                    contentType : "application/json",
                    logLevel : 'debug',
                    transport : 'websocket' ,
                    trackMessageLength : true,
                    fallbackTransport: 'long-polling'};


    request.onOpen = function(response) {
        content.html($('<p>', { text: 'Atmosphere connected using ' + response.transport }));
    };

    request.onMessage = function (response) {
        var message = response.responseBody;
        try {
            var json = jQuery.parseJSON(message);
        } catch (e) {
            console.log('This doesn\'t look like a valid JSON: ', message);
            return;
        }

        content.append('<p><span style="color:">' + json.identifier + ' Buy' + json.buy +' Sell ' + json.sell +'</span>' + '</p>');
    };

    request.onClose = function(response) {
        logged = false;
    }

    request.onError = function(response) {
        content.html($('<p>', { text: 'Sorry, but there\'s some problem with your '
            + 'socket or the server is down' }));
    };

    socket.subscribe(request);
});

订阅处理程序：

@Path("subscription")
public class CurrencyPairSubscription {

    @GET
    @Suspend
    public Broadcastable subscribeToQuote(@Context final BroadcasterFactory broadcasterFactory) {

        System.out.println("New subscriber");
        return new Broadcastable(broadcasterFactory.lookup("A_TOPIC", true));
    }
}

Web.xml中

<?xmlns:j2ee="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee    http://java.sun.com/xml/ns/j2ee/web-app_2.5.xsd">

    <description>AtmosphereServlet</description>
    <display-name>AtmosphereServlet</display-name>
    <context-param>
        <param-name>resteasy.scan</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>resteasy.scan.providers</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>resteasy.scan.resources</param-name>
        <param-value>false</param-value>
    </context-param>
    <servlet>
        <description>AtmosphereServlet</description>
        <servlet-name>AtmosphereServlet</servlet-name>
        <servlet-class>org.atmosphere.cpr.AtmosphereServlet</servlet-class>
        <!-- If you want to use Servlet 3.0 -->
        <async-supported>true</async-supported>
        <!-- List of init-param -->
        <init-param>
            <param-name>com.sun.jersey.config.property.packages</param-name>
            <param-value>com.foo</param-value>
        </init-param>
        <init-param>
            <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
            <param-value>true</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>AtmosphereServlet</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>BroadcasterServlet</servlet-name>
        <servlet-class>com.foo.broadcaster.BroadcasterServlet</servlet-class>
    </servlet>
     <servlet-mapping>
        <servlet-name>BroadcasterServlet</servlet-name>
        <url-pattern>/broadcasterServlet/*</url-pattern>
    </servlet-mapping>

</web-app>

Answer 1

经过大量的敲击我的头后，我得到了这个工作*。诀窍是不在查询字符串中传递标头。您可以在JavaScript中构建请求时完成此操作：

$(function () {
    "use strict";

    var content = $('#content');
    var input = $('#input');
    var status = $('#status');
    var logged = false;
    var socket = $.atmosphere;
    var request = { url: 'http://localhost:8080/atmospherePOC/rest/subscription',
                    contentType : "application/json",
                    logLevel : 'debug',
                    transport : 'websocket' ,
                    trackMessageLength : true,
                    fallbackTransport: 'long-polling' ,
                    attachHeadersAsQueryString: false}

通过此更改，订阅请求将命中服务器。

*谨慎，整个应用程序无法正常工作，仍有问题，所以不能说100％这有效但从服务器端看到记录器是一个很好的指示

气氛：订阅未到达服务器

1 个答案: